Route Reliability
Charlotte Amalie → Washington
STT–IAD · 1,606 miles · Cyril E. King Airport to Washington Dulles International Airport
79
Usually Fine
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 1.8%
- Cancelled
- 328
- Flights in the data
Data through May 2026.
United Airlines is the only airline in this data on this route, arriving on time 83% of the time across 328 flights. No comparison to make.
What the data says
Departure time hasn't mattered much.
On-time rates stay between 82% and 84% across the day.
Sunday scaries are real for this one.
STT–IAD flights arrived on time 87% of the time on Thursdays. On Sundays: 77%.
Flights on this route
The breakdown
- Mon85%(46 flights)
- Tue82%(44 flights)
- Wed78%(41 flights)
- Thu87%(45 flights)
- Fri87%(45 flights)
- Sat85%(54 flights)
- Sun77%(43 flights)
- 12–3 PM82%(156 flights)
- 3–6 PM84%(162 flights)
82%
May
Jun 87% → May 82% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 86% | 29 |
| August 2025 | 72% | 18 |
| October 2025 | 90% | 10 |
| November 2025 | 90% | 30 |
| December 2025 | 89% | 45 |
| January 2026 | 75% | 32 |
| February 2026 | 78% | 27 |
| March 2026 | 77% | 31 |
| April 2026 | 86% | 29 |
| May 2026 | 82% | 33 |
Same trip, other airports
Keep nerding
Based on 328 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.